Garnierite

Garnierite is a combination of moonstone mixed with nickel + copper, and can sometimes be called Green Moonstone. Garnierite helps with grounding, luck, and strength. The stone connects with the heart chakra, and therefore brings a soothing and optimistic energy to our heart, allowing us to gently release pent-up anger, anxiety or misplaced guilt. 

It is also sometimes referred to as the "Stone of the Goddess" due to its strong association with Mother Earth and the goddess Gaia in spirituality.